Leviticus 10:7-9

New International Version - UK

⁷ Do not leave the entrance to the tent of meeting or you will die, because the Lord’s anointing oil is on you.’ So they did as Moses said.

⁸ Then the Lord said to Aaron, ⁹ ‘You and your sons are not to drink wine or other fermented drink whenever you go into the tent of meeting, or you will die. This is a lasting ordinance for the generations to come,